White slab microcrystalline wax used for adhesive

In hot-melt adhesives, microcrystalline wax primarily serves as a viscosity
modifier and performance enhancer; it improves the adhesive’s flexibility,
heat resistance, and bonding strength to certain hard-to-bond materials.
Viscosity and Flow Control: This is the most fundamental function of
microcrystalline wax. As the component with the lowest viscosity in the
formulation, it effectively reduces the viscosity of the hot-melt adhesive in
its molten state and improves its flowability, allowing the adhesive to
better wet and penetrate the surface of the substrates, thereby enhancing the
bonding performance.
Enhancing Flexibility and Impact Resistance: Compared to paraffin wax,
microcrystalline wax has a finer crystalline structure due to its higher
content of branched-chain hydrocarbons and naphthenes. It imparts better
flexibility, flexural strength, and elongation to hot-melt adhesives, which
is crucial for packaging or bookbinding applications that must withstand a
certain degree of deformation.